Sling novice. Please help me choose a sling

My babybjorn is starting to be a bit small and I don't want to use one of these heavy backpacks. Both my baby and I like to use a sling so I was thinking of one of the fabric slings (have been fancying them for a while).

Could you give me tips to choose. I saw one which is called *close baby carrier* which seems quite nice, has any one tried it?

My baby is four months old and I want something I can use for a while.

I have the CLose. Ds is 19 weeks and a big lardy boy of about 18 pounds and I find it a breeze to use- I gave up on the Babybjorn when he was only a week old as it was knackering my back. It's also comfy if you have big boobs like me- they were totally squished in the babybjorn